You unlock this post with the key of imagination. Beyond it is another dimension—a dimension of…
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HoloDecks started with a single song. Karluk used an openFrameworks-enabled custom application to visualize the track into the shape of a disc—a nice nod to the shape of those quaint, old timey CDs and records—that he then began to morph into geometric waves, peaks, and valleys with the rhythm.

Eventually, he captured a screenshot, which became the basis for a 3D-printed MakerBot creation.

The last part is a bit tough to parse, but here goes: When viewed through a smartphone, "another layer of audio reactive visuals are mapped to the object," resulting in a seemingly animated inanimate object.